Question

The radius of the first (lowest) orbit of the hydrogen atom is $a_{0}.$ The radius of the second (next higher) orbit will be.

• A. $4a_{0}$
• B. $6a_{0}$
• C. $8a_{0}$
• D. $10a_{0}$

Answer 1

Answer: (A)

$4a_{0}$

Answer 2

$r_{n} \propto n^{2}$